URL & Query String Inspector

Break down a URL to inspect its parts. It is completely free and very easy to use.

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100% Client-Side PrivacyProcessed entirely in browser memory with zero server storage.

Instant Real-Time ExecutionZero latency data manipulation powered by Web APIs.

Free & UnrestrictedNo accounts, subscriptions, or daily usage limits.

Technical Overview: How URL & Query String Inspector Works

The URL & Query String Inspector breaks down any web URL into its constituent components: Protocol, Hostname, Port, Pathname, Query Parameters, and Hash Fragment for debugging and API analysis.

Parses URLs using the standard W3C `URL` and `URLSearchParams` Web APIs. Extracts protocol schemes (`https:`), subdomain/domain hierarchies, port numbers, structured key-value query parameter dictionaries, and hash identifiers.

Practical Examples & Usage

Deconstructing an eCommerce Campaign URL

Input:https://shop.example.com:8080/products/shoes?category=running&sort=price_asc&utm_source=google#reviews

Output:

Protocol: https: | Host: shop.example.com:8080 | Path: /products/shoes
Params: { category: "running", sort: "price_asc", utm_source: "google" }
Hash: #reviews

Extracts every structural layer and presents query parameters as an editable key-value dictionary.

Real-World Applications & Use Cases

Debugging complex marketing URLs with numerous tracking parameters (UTM tags, Google Click IDs, Facebook pixel IDs).
Inspecting OAuth2 redirect URLs, callback endpoints, and state parameters during authentication integration.
Verifying API endpoint query parameters and detecting duplicate or malformed keys.
Parsing deep links and URL fragments in Single Page Applications (SPAs).

How to use URL & Query String Inspector

Paste a full URL (e.g., https://example.com:8080/path?key=value#hash) or standalone query string (?foo=bar) into the input box.
Review the structural anatomy breakdown: Protocol, Hostname, Port, Path, and Fragment.
Inspect the query parameter table with raw and decoded parameter values.
Check for security warnings regarding unencrypted HTTP or sensitive tokens in the URL.
Copy individual components or export the structured data as JSON.

Edge Cases & Limitations

•URLs must include a valid protocol scheme (e.g. `https://` or `http://`) to be parsed by the standard URL constructor.
•Query strings containing multiple values for the same key (e.g. `?tag=js&tag=react`) are captured as arrays.
•URL fragments (hash `#...`) are handled client-side by browsers and are never sent to web servers in HTTP request lines.

Recommended Best Practices

•Use the native `URL` and `URLSearchParams` APIs in JavaScript instead of fragile custom regex parsing.
•Strip tracking UTM parameters before calculating canonical URLs to avoid duplicate content indexation.
•Validate that URL hostnames do not contain unexpected open-redirect domains in authentication callbacks.

Frequently Asked Questions

Can this tool parse standalone query strings without a full domain?

Yes! If you paste a raw query string (e.g. ?utm_source=google&utm_campaign=winter), the inspector automatically isolates and decodes the parameters without requiring a domain prefix.

Why does the tool flag sensitive parameters?

Passing authentication tokens, API keys, or passwords inside URL query strings is a major security risk because URLs are recorded in server access logs and browser history.